Seat-guide cultivator



. May 10, 1927. 1,628,435

J. P. SEAHOLM SEAT GUIDE CULTIVATOR Filed May 22, 1924 5 Sheets-Sheet l y 7 J. P. SEAHOLM SEAT GUIDE CULTIVATOR 5 Sheets-Sheet 2 Filed May 22, 1924 May 109 1927.

J. P. SEAHOLM SEAT GUIDE CULTIVATOR Filed May 22, 1924 III WIRH 5 Sheets-Sheet 3 I I lull-H May 1927' J. P. SEAHOLM SEAT GUIDE CULTIVATOR Filed May 22, 1924 5 Sheets-Sheet 4 May- 10 1927.

.1. P SEAHDLM SEAT GUIDE CULTIVATOR Filed May 22, 1924 5 Sheets-Sheet 5 fix/z Patented May 10, 1927.

T El STA TES- JOHN P.

SEAHOLM, or BIO-LINE, ILLINOIS, 'Assre v-on, sv'mnsnn ASSIGNMENTS, T

' Iceman, IMPLEMENT conrenr, A, ocn-zeonn rron or ILLINOIS.

SEAT-GUIDE conrrva'ron.

Application filed May 2-2, 1924; Serial No. 715,124.

The invention relates to a cultivator.

It relates particularly to a seat-guide cultivatortor use in cultivating corn. cotton, and the like.

a The general object of the-invention is to provide an improved seat-guide cultivator.

A; more particular object is to provide a seat-guide cultivator in which movements of the seat more the cultivator dragbars lo as well as the cultivator supporting wheels.

Other objects. and advantages of the invention will appear from the specification and drawings.

. An embodiment ofthe invention is il lustrated in the drawings in which Figure l is a perspective view of the cultivator. i

Figure 2 is a side elevation and partial section of the cultivator.

Figure 3 is a front elevation of a portion of the cultivator showing: the drag bar spacingmeans.

Figure 4 is a plan view of a portion of the cultivator showing the parts in the po- 25 sition. they occupy when: the cultivatoris in straight-ahead position.

Figure 5 is a plan view similar to Figure 4' showing the parts in the position they occupy when the seat has been moved to .Hi guide the cultivator to the left. V p

The cultivator comprises, in general, an arched. axle 1 on which are journalled the supporting orground wheels 2 and 3. An operators seat t is pivoted on the arched :s i axle and pivotally connected to a guiding pole 5; both pivots being onsubstantially vertical axes. An arch 6 is supported at the forward endv of: the cultivator and drag bars 7 and 8 carrying the usual cultivat 41) ing shovels or other cultivating devices are pivoted to. the arch. The drag bars 7 and 8 can be independently raised, lowered, and adjusted by means of the levers 9' and 10. Both drag bars can he raised to- 45 gether by means. of a master lever 11 which oscillates a shaft 12 thatis connected by the links 13. and: 14 to the arched axle 1 so that movements. of the master lever not only raise the drag bars'but also move the arched axle to balance -the cultivator.

ill

The distance between. thedragbars may bevaried by. drag bar spacing means controlled by lever 15.

The arched axle 1 is journalled in the bearings 16S and LT to which are connected v drag bars.

the side members 18 and 19 of the cultivator frame. These side members extend forwardly and are connected to a front cross brace or member 20 of angle cross section. Bracing members 21 and 22- 'eXtend from the bearings 16 and 17, respectively, to the arch 6 to brace the arch and the frame together. The arch 6 is held in position on the cross brace 20 by angle bolts 23which also clamp the U-shaped bracket 24 to the cross brace.

The guiding pole 5 extends through the U -sl'ia-ped member 24 and is pivoted to it by the bolt 25 which extends through the base o'tf'thz'r til, the guiding pole, and the cross brace 20. The guiding; pole carries the double-tree 26 with its pendulum members 27 and 28 which carry the swingle trees 29 and 30; The pendulum members are connected to the arch 6 by links, only one of which, 31, is shown. 75 ..'he drag bars are each connected to the arch 6 in a similar manner and, therefore, only one connection will be described. The connection of the drag bar 7 is illustrated in Figure 2. It comprises member 32 pivoted to the arch 6 and a second member 33 pivoted to the firston an axis 34. The drag bar 7' is fixed to member 33. This connect'ion permits the drag bar to be moved in both a horizontal and a vertical plane. The drag bars are raised and lowered independently by means of the levers 9 and 10. Since the connection of each of these lovers to its drag bar is the same, only one will be described, namely, that ofthe drag bar 7 as illustrated in Figure 2. The lever 9 is pivoted at the point 35 and it operates over a toothed sector 36, the lever 9 carrying a latch 37 co-operating with the teeth of the sector. A plate 38 is fixed to the lever 9 and hooked to one side of this plate is a chain 39, the other end of which is connected' to the member 40 fixed to the drag bar 7. A similar chain connects a plate on the lever 10 with themember ll on drag bar 8. Hooked on the other end of the plate 38 is a spring 42;, the other end of Which-is connected to a bracket on the forward end of" the cultivator. This bracket is not illustrated but a similar bracket 43 is. illustrated in connection with the spring 44 associated with the lever 10-. These springs 42 andiktnormally bias the levers 9 and" 10 forwardand assist in raising the ill) The two drag" hers are raised simultaneously hy means (it the mentor lever 11 which is fixed to the shaft 12. This shaft carries arms iii: connected to the links 13 and H; which. in turn. are connected to the hearing-s for wheels 2 and on the arched axle 1. hen the lever 11 is moved. the arched axles are swung; in unison with it. Also, when the master lever is moved, the sectors 86 with which the levers 9 and 10 co-operotc are moved with the shaft 12. Since the lovers 9 and 10 are locked to the sectors they are moved with them and the drag hers are rain fl by means of the chains 39.

The distance hetween the drag hare may he varied by means of a spacing mechanism controlleijl h the lever 15. This lever open ates over :1 sector carried hy the seat har and it has a latch 51 :lor cooperating; with the teeth of the sector. The end of the lever 15 has on angular exteneion to which is pivoted a link 52%. This link is piv' oted. in turn. to plates 54-. Links 55 and 56 are pivoted on opposite sides of the platen. These linlw extend outwardly toward the sides ol the cultivator and are pivoted to links 57 and 58 which are. in turn. pivoted to the projections 59 and 0 on the hearings ill and 1.7. The links and are provided with a Series of holcn 1 and G2 to receive the connecting holte oi. downwardly projecting members (33 and Cl. The mein hers (l3 and (v-l ore lu'aced nonilist pivotal movement relative to the links by the hrnces 5 and (5G and their lower ends extend through openings 67 and 68 in the memhers l0 and il-l. on the drag; here 7 and E lhese openings are nullicienttly large to permit the drag hare to move up and down on the meinhers (lo end ll-l: without interference from the mcmhers.

\Vhcu the drag horn occupy their nornnil position. the spacing means occupies; the position illuntraled in .i inurc il. llhcn it. is desired to move the drag horn closer to or further 'l'roin och other the lever '15 in pulled hacluvard or pushed forward. 1'' itis pulled backward. it pulls the linlt 532i up \vardly which. in turn. pulls the platen Til npwurdly and savings the inner cndn ol" linlo: 5:"; end 543 upwardly. 'lhis swings the lower ends oi the nicinhere (i and (ll: toward one another and liringn the drag horn T and i closer to one onother. When the lever i5 is moved in the opponitc direction the oppo nitc action taken place and the drag bars 7 and tl are moved l arther from one another.

The neat l, is carried by 51. seat supporting inomher having two hers ill and T1. which extend over the arched axle l and are bolted to a pivot block 72. This pivot; block has two conical pivots T3 and H- which are received wi hin complementairy sockets in the memhcro T5 and 76. The socket members and '76 have squared ends which fit in eouared holco in the twirling pole ape 77 and TR. 'lhcne st raps extend forwardly and are bolted on i'ippoi-ite sides oi the guiding pole 5 at the points 79 and S0. The two e'lropo 7 and ill hear on nhoulders formed h the l noes ill and 852 on the socket memhern 75 nd "((3 end :1. bolt 83 connects the two straps. lly tigihtenii'ig this bolt, the two nochel' incinhers 75 and 76 may he drawn into en .ejcincnl on the coni :al ends oil? pivots- 3 and Til. to tighten the connection and talcc up any wear that may occur.

The sent have are pivoted to snrii'ip; ahout a vertical axiu on the arched axle l aiuh tor thin purpose. a hearing); liloclc is provided. that in bolted to the arched nxle l. by means ol :2 holt ill end a complementary clamping, mcmhcr no (we. llinuro il The two sent haro TO and 7']. are connectml to a. U-nhaped member 03 which in wlidnhly and rotntehly mounted on the hearing l)l. )ClC 90. For this purpose the hem-inn; hlimlc is provided with ircular projection f t over which tits :1 nouorcd wanhcr El?) which, in turn, tits between the arms o'li' the l..inliacpcd member 93. The hoped memhe slides haclc and forth relative to the washer and the lJ-shapedmcmher together with the washer turn ahout the hoes or projection ill. in this; way, the triotion of the sliding: motion is taken by the washer li-herehy relieving the circular projection From the wear due to sliding.

ln cultivator-s oli the sent-guide type it is the usual practice to swing the sent to one wide and t'licrchy angle the guiding; pole and the cultivator whceh-i rzrlative to one another. For exnmplc. referring); to l igruroe 'land 5, it the cultivator in to he guided to the left, the neat in owning: From, the position oil? Fig ure l to that of rem-m 5. This swings the cult ivutor wheels to the angle, shown in Fig;- ure 53 and ,oioidee the cultivator to the loft. 'lhc cultivulor drag: hare: move with the cultivalor and, when the wheels are first; swung around, the tendency in For the rcur ends of the drag: lJtll'H with the nhoreln connected to them to more in the same direction as the real. that, in. to the right. until the new direclion taken hy the cultivator :arries them hack to the lcl'l. which in the direction it: it, dcnircd to ouii'le them. .lhe action ol the rear erdn oi the dim: ltllh in an ordinary neat-guide cultivator in time innt the o site oi what lit wanted at the instant; the neat is moved. The operator 'iillil'i to more the shovels to the left to avoid plants, hut. when he ewinon the neat to guide the cultivzitor to the left, the rear ends of the drag hare nre momentarily moved to the right, and this nniy he :lor just :1. long: enough time to cause the shovels to dig: out the plant.

In tie cultivator o'li thisapplication, provinion is nnide t'or positively swinging the drag hers hy means of the seat at the some time that the cultivator is steered. For this till is counteracted.

of the seat bars will move the drag bars 7 and 8 to the left. The link 96 pushes on link 58 and swings the whole linkage mechanism with the drag bars to the left. In this way, the rear ends of the drag bars with'the cultivator shovels do not move to the right, when the seat is swung to the right. Instead, they move. to the left at the same time the cultivator is being steered to the left with the result that the action of the cultivator in moving them to the right The final result is that the rear ends remain stationary for an instant and then move to the left but without having moved to the right at all. This gives a more instantaneous action than in the ordinary type and avoids the difficulty that would be encountered with the rear ends of the shovels moving to the right when it is really desired to move them to the left.

It will be observed that the spacing means for the dragbar performs three functions, it acts as a spacing means for varying the distance between the drag bars, it serves, in combination with the seat bar, as a means for swinging the drag bars to one side or the other, and it acts to prevent the drag bars from moving laterally relative to the frame while the cultivator is in operation. For example, referring particularly to the last function, when the cultivator is moving for-v ward with the seat bar stationary, the spacing means cannot move to one side or the other because the linkage mechanism is connected to the adjusting lever 15 which is locked to its sector. Also, the linkage mechanism is connected by the link 96 to the seat bars and cannot move unless the seat is moved. The drag I bars can, however, be quickly adjusted to and from one another and they can both be moved to the right or left by moving the seat bar, but in. any of the positions they are always held against lateral movement.

It should also be noted that the members l0 and 41 on the drag bars serve three purposes. They serve as connections for the chains 39, they serve to receive the members 63 and 64, and they also form supports for the foot rests 97 and 98.

It will be understood that the structure shown is for purposes of illustrationonly, and .that variations may be made without departingfrom the spirit and scope of the invention.

I claim:

1. A cultivator having a Wheeled frame,

drag bars pivoted at their forward ends to swing both laterally and vertically on stationary pivots carried by the frame, a seat supporting member pivoted to the cultivator to swing about a substantially vertical axis for steering purposes, and connections between the seat supporting member and the drag bars for positively and quickly swinging the rear ends of the drag bars in unison with and in the same direction as the front portion of the seat supporting member.

2. A cultivator having a wheeled frame including an arched axle, drag bars pivoted at their forward ends to swing both laterally and vertically on stationary pivots carried by the frame, a seat supporting member extending from behind the arched axle to in front of it and pivoted to the cultivator to swing about a substantially vertical axis for steering purposes, and connections between the seat supporting member and the drag bars for positively and quickly swinging the rear ends of the drag bars laterally in unison with the seat supporting member and in the same direction as the portion of the seat supporting member in front of the arched axle. u

A cultivator having a wheeled frame, drag bars pivoted at their forward ends to swing both laterally and vertically on stationary pivots carried by the frame, a seat supporting member pivoted to the cultivator to swing about a substantially vertical axis for steering purposes, and connections between the seat supporting member and the drag bars for moving the rear ends of the drag bars in unison with the front portion of the seat supporting member, said connections also serving to prevent the drag bars from moving laterally relative to the cultivator when the seat supporting member is stationary.

41-. A cultivator having a wheeled frame, drag bars pivoted at their forward ends to swing both'laterally and vertically on pivots carried by the frame, a seat supporting member pivoted to the cultivator to swing about a substantially vertical axis for steering purposes, connecting means between the seat supporting member and the drag bars for moving the rear ends of the drag bars laterally in response to movements of the front end of the seat supporting member, said connecting means being connected to the drag bars so as to permit the drag bars to move vertically relative to the connecting means, said connecting means also being adjustable to vary the distance between the drag bars, and means for adjusting the connecting means to vary. the distance between the drag bars.

5. A cultivator having a wheeled frame, drag bars mounted on the cultivator to move transversely and vertically, drag bar spacing means connected to the drag bars to permit the latter to move vertically and pivoted to links which in turn are pivoted to the frame, adjusting means tor moving the drag bar spacing means on its pivotal connections to the links to vary the distance between the drag bars, a latch device for holding said means in its adjusted posit-ions, and means mounted on the frame and conneettul to the drag bar spacing means for moving said spacing means and the links on the pivotal connections to the frame to move the drag bars laterally in unison.

(3. A culti 'ator having a wheeled tl'rame, drag bars mounted on the cultivator to move transversely and vertically. drag bar spacing means connected to the drag bars to permit vertical movement: of the latter and pivoted to links which in turn are pivoted to said frame, a seat bar pivoted on said :trznne and connected to said drag bar spat ing means to swing the latter on said links to move the drag bars transversely in unisoin and adjusting means connected to the drag bar spacing means for moving the same on its pivots to the links to vary the spacing of the drag bars, said adjusting means being mounted in line with the pivot of the seat bar and having a latch for holding it in the positions to which it may be adjusted. 7. A cultivator having a wheeled frame including an arched axle, drag bars pivoted. at their forward ends to move both laterally and vertically on pivots carried by the trame, a linkage mechanism carried by the frame. forward of the arched axle and connected to the drag bars so as to leave the latter free to move vertically, means for adjusting the linkage mechanism to vary the distance between the drag bars, a seat supporting member pivoted. to the cultivator to swing about a substantially vertical axis for steering purposes, and a connection between the front end of the seat supporting member and the linkage mechanism to move the linkage mechanism and the drag bars in unison with and in the same direction as the front portion oi the seat sup iiorting member, said linkage mechanism serving to prevent lateral movement of the drag bars when the seat supporting member is stationary.

8. A cultivator lniving a wheeled frame, drag bars, a pair of links pivoted to the frame at opposite sides and extending dowInva-rdly, a second pair of links pivoted to the first pair and extending inwa'n'dly, a pivotal connecting device for joining the inner ends of the second pair of links, a lever mechanism for varying the position of the pivotal connecting device, a dowmvardly extending member carried by one of the second pair of links, said 1nen1- ber extending lOORBlY through an opening in a member carried by one of the drag bars and being braced against pivotal movement relative to the link to which it is connected, :1 downwardly extending lllOlllbQl. carried by the other of said second pair of links, said secornl downwardly extending member extending loosely through an opening in a member rarried by the other drag bar and being braced against )ivotal movement relative to the link to which it connected, a seat supporting member pivoted to the cultivator to swing zbout a substai'itially vertical. axis for steering purposes, and a connection between the seat supporting member and the linkage mechanism.

9. A cultivator having a wheeled frame, including an arched axle, drag bars carried by the frame, and movable hot-h laterally and vertically, a seat supporting bar pivoted to the cultivator so as to be movable laterally to guide the cultivator, a linkage mechanism pivoted to the frame and including links which extend downwardly and eo-operate with connections on the drag bars so that lateral movements of the links will move the drag bars laterally but the drag bars will remain free to move vertically relative to the links, an. adjusting device mounted on the arched axle and connected to the linkage mechanism for adjusting said mechanism to vary the distance between the drag bars, and a connection between the seat supporting bar and the linkage mechanism for swinging the linkage mechanism laterally in unison with. the seat bar.

In testimony whereof, I atlix my signature.

JOHN P. SEAHOLM. 

